World culture has at its disposal a certain part of the great Platonic heritage. Plato's work has come down to us in the form of 34 dialogues, 13 letters and the essay "Definitions", with some of them being questioned by a number of researchers in their belonging to the pen of genius. In addition to , preserved 25 epigrams (short elegant poems) and information about the young Aristocles (the real name of the philosopher). and the name "Plato" to him , Allegedly , gave Socrates for a powerful physique) as a successful writer of poetic works of various genres , including comedies and tragedies, which he burned himself after meeting Socrates. But even what we have strikes with its depth of immersion in the subject of research and the broadest scope .. He explores the Cosmos with its World Soul, and our Universe, and its creation, and our Earth, and the "first-pearls" - atoms, and people with their passions, weaknesses and virtues, and do not list everything. The philosopher pays much attention to the idea (principle) - the prototype of all objects and phenomena of the material world, and the One is for him a harmonious combination of the ideal and the material. The idea of good, the desire to comprehend it and bring people to life is a most complex and incomprehensible task due to the imperfection of the human soul, but Plato makes an attempt to solve it by presenting the concept of his vision of the perfect state and social structure.